From 9ad0fc489ff3c32face845989a8f5f311208b4f9 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Mon, 02 Mar 2015 07:51:51 -0500
Subject: [PATCH] Fix javascript error after creating a folder which is a subfolder of another one (#1490297)

---
 program/js/app.js |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 56d07f3..7d3f0c5 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -1608,7 +1608,8 @@
 
   this.folder_collapsed = function(node)
   {
-    var prefname = this.env.task == 'addressbook' ? 'collapsed_abooks' : 'collapsed_folders';
+    var prefname = this.env.task == 'addressbook' ? 'collapsed_abooks' : 'collapsed_folders',
+      old = this.env[prefname];
 
     if (node.collapsed) {
       this.env[prefname] = this.env[prefname] + '&'+urlencode(node.id)+'&';
@@ -1624,7 +1625,8 @@
     }
 
     if (!this.drag_active) {
-      this.command('save-pref', { name: prefname, value: this.env[prefname] });
+      if (old !== this.env[prefname])
+        this.command('save-pref', { name: prefname, value: this.env[prefname] });
 
       if (this.env.unread_counts)
         this.set_unread_count_display(node.id, false);

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